Key result
Radiofrequency ablation of two distinct right atrial foci successfully eliminated an antiarrhythmic drug-resistant atrial tachycardia mimicking atrial fibrillation in a 60-year-old man.
Case Report (n=1)
Careful evaluation of intracardiac recordings is important in patients undergoing RF ablation for presumed atrial fibrillation, as bi-focal atrial tachycardia can mimic AF and be treated with targeted right atrial ablation.
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May offer ablation option for drug-resistant atrial tachycardia mimicking AF; leaves open confirmation in larger studies.
Irregular tachycardias mimicking atrial fibrillation (AF) have previously been described. We report a case of a 60-year-old man with an antiarrhythmic drug-resistant atrial tachycardia (AT) mimicking AF. The tachycardia consisted of two distinct ATs with interference of one repetitive AT with another sustained AT. Radiofrequency (RF) ablation of two distinct right atrial foci eliminated the irregular tachycardia. Although catheter-based pulmonary vein isolation has become a popular therapeutic approach for patients with symptomatic AF, careful evaluation of the intracardiac recordings in the patients undergoing RF ablation for AF is important.
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Ejima et al. (2007) conducted a case report in Atrial tachycardia mimicking atrial fibrillation (n=1). Radiofrequency (RF) ablation was evaluated on Elimination of irregular tachycardia. Radiofrequency ablation of two distinct right atrial foci successfully eliminated an antiarrhythmic drug-resistant atrial tachycardia mimicking atrial fibrillation in a 60-year-old man.
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